Component
Alarm Name
Alarm
Severit
y
Possible Cause
Measures
Comp drive
overload
Major
1. The comp is in lack
of oil.
2. The condenser fins
are blocked.
3. The outdoor units do
not run properly.
4. The refrigerant is
overfilled.
5. The comp is faulty.
1. Fill oil to the comp.
2. Clean the condenser
fins.
3. Maintain or replace
the outdoor units.
4. Decrease certain
amount of
refrigerant.
5. Maintain or replace
the comp.
Compressor start
failed
Major
1. The comp is in lack
of oil.
2. The comp driver is
faulty.
3. The comp is faulty.
1. Fill oil to the comp.
2. Maintain or replace
the comp driver.
3. Maintain or replace
the comp.
Comp drive short
period
Critical
The comp driver is
faulty for multiple
times, or the faulty
lasts for a long time.
Maintain or replace the
comp driver and clear
the accumulated
runtime.
Comp freeze point
protection
Major
1. The refrigerant leaks.
2. The suction pressure
sensor displayed is
different from the
actual pressure.
3. The filter dryer is
blocked.
4. The expansion valve
is blocked.
1. Check for any
leakages. Fill
refrigerant after
maintenance or
replacement.
2. Calibrate or replace
the suction pressure
sensor.
3. Maintain or replace
the filter dryer.
4. Maintain or replace
the expansion valve.
Suction temp
sensor fault
Major
1. Cables to the
temperature sensor
are not properly
connected.
2. The temperature
sensor is faulty.
1. Check cables to the
temperature sensor.
2. Maintain or replace
the temperature
sensor.
FusionModule800 Smart Small Data Center
User Manual
6 O&M
Issue 01 (2021-02-05)
Copyright © Huawei Technologies Co., Ltd.
389
